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| Presentation | 2007-05-18 10:50 Evaluation of the Near-Field UWB Transmission Characteristics Using the MR-FDTD Method Applied to the Parallel Computing Ken-ichi Asanuma, Katsuhiro Fujimoto, Yuichi Yokota, Tadahiko Maeda (Ritsumeikan Univ.)  AP2007-22 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | To assess the actual performance of UWB transmission systems, various relative angles between the transmitting antenna and the receiving antenna must been evaluated, considering the actual relative positions of mobile terminals. In the case of far-field conditions, the transmission model can be described using the angular characteristics of the antenna transfer functions. In contrast, in the case of near-field conditions, 3D-conformal FDTD technique or high-resolution staircase approximation can be generally used to obtain accurate results for the skewed models where the transmitting and receiving antennas are not placed in parallel. However, these two solutions take significant calculation time because the analytical models should be prepared as a parameter of the angle between both antennas. Therefore, the MRFDTD (Multi-Region FDTD) method, which incorporates the separated multi-analytical region using near-field to near-field transformation (NFNFTF) as one of the more convenient solutions, was reported in the past. While several studies and results with NFNFTF based on the time-domain implementation have been reported, time-domain NFNFTF in practice has some problems. For example, the waveform interpolation and the random memory access caused by the time-shift from the source point to the observation point is not appropriate for parallel computing. In this paper, the MR-FDTD method using frequency-domain NFNFTF will be discussed. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | UWB / NF-NF transfromation / MR-FDTD / Paralell Computing / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 35, AP2007-22, pp. 51-56, May 2007. | |
| Paper # | AP2007-22 | |
| Date of Issue | 2007-05-10 (AP) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | AP2007-22 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2007-05-17 - 2007-05-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kochi Univ. of Tech. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | etc. |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2007-05-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of the Near-Field UWB Transmission Characteristics Using the MR-FDTD Method Applied to the Parallel Computing |
| Sub Title (in English) | |
| Keyword(1) | UWB |
| Keyword(2) | NF-NF transfromation |
| Keyword(3) | MR-FDTD |
| Keyword(4) | Paralell Computing |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Ken-ichi Asanuma |
| 1st Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 2nd Author's Name | Katsuhiro Fujimoto |
| 2nd Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 3rd Author's Name | Yuichi Yokota |
| 3rd Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 4th Author's Name | Tadahiko Maeda |
| 4th Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
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| Speaker | Author-1 |
| Date Time | 2007-05-18 10:50:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2007-22 |
| Volume (vol) | vol.107 |
| Number (no) | no.35 |
| Page | pp.51-56 |
| #Pages | 6 |
| Date of Issue | 2007-05-10 (AP) |
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